Car revs to 800 rpms and drops to 400 nearly stalling whe...

Car revs to 800 rpms and drops to 400 nearly stalling when u turn the heater on Mechanic's Assistant: Is the check engine light on? Does the car stall at idle or when driving? Yes engine light is on nearly stalls at idle ...

Car revs to 800 rpms and drops to 400 nearly stalling when u turn the heater on Mechanic's Assistant: Is the check engine light on? Does the car stall at idle or when driving? Yes engine light is on nearly stalls at idle Mechanic's Assistant: What is the make/model/year of your car? 2015 Mitsubishi outlander sport Mechanic's Assistant: Are you fixing your Outlander Sport yourself? What have you tried so far? Auto zone plugs no 1 I changed that

Automotive Expert
Hello, my name is \*\*\*\*\* \*\*\*\*\* to just answer! I will be assisting you with all of your vehicle questions today. I’m really sorry that you’re having this issue and I’m going to help you through it, but please understand that I (respectfully) don't know your skill level or tools you have to assist us to diagnose/repair your vehicle. Also, understand that I can't see, smell, hear or touch the vehicle either, so your patience/understanding is appreciated. Please allow me up to 10 minutes to gather schematics and other pertinent information for this issue. I do not know anything about the fees or charge so please if you have any concerns, direct them to customer service. My aim is to give you the best service possible and to help you. If you have any questions or concerns, please don’t hesitate to let me know. I appreciate your patience and will provide responses as soon as possible. Thank you. does it matter if vents, floor or defrost is selected when you turn the heater on and the rpms drop?

Automotive Expert
ok, and when you went to autozone what fault codes did they find when they put their code reader on it?

I don't have that paper right now but it said. number 1 plug or coil pack I changed them both
Automotive Expert
was it P0301?

1 was
Automotive Expert
there were more? I need to know what they were

I don't knowI think it was 101
Automotive Expert
ok, then you need to go back. I'm not going to guess. that doesn't fix anything. if it was p0101 then thats the mass airflow sensor

Can I get back to u in about 15. 20 minutes
Automotive Expert

Ok thanks
Automotive Expert
you bet

I'm backThat other code is po421
Automotive Expert
Automotive Expert
the catalytic converter has deteriorated. (see attachment)

Automotive Expert
do you still have p0301?
Automotive Expert
did you replace the coil?

Automotive Expert
the coil and the plug for #1 cylinder?
Automotive Expert
Just checking to see how it's going. I want to make sure you are taken care of. But with no response, I can only give you what I already have. Have a great day. If you need to continue or if there is anything else I can assist with at all, let me know here and I will be happy to assist further!

Who is this
Automotive Expert
I was helping with your car

Oh hi .I had the converter s checked their all good he said it might be a bent valve
Automotive Expert
ok, did he do a compression test to verify that?

I don't know. I think he just checked the converters
Automotive Expert
ok, then there should be no reason for him to say it might be a bent valve unless he did a compression test.

Okay.I have an appointment Monday at the dealership to have the car annalise
Automotive Expert
ok but be leery of the dealership. let me know what they say before agreeing to anything

Okay, will doI'm not letting them work on anything I just want them to put it on the machine
Automotive Expert

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